Planck, Schrödinger, and others introduced

**quantum**mechanics, a probabilistic notion of particles and interactions that allowed an accurate description of atomic and subatomic scales. Later,**quantum**field**theory**unified**quantum**mechanics and special**relativity**. General**relativity**allowed for a dynamical, curved spacetime, with which highly ...**Special relativity**can be combined with**quantum**mechanics to form relativistic**quantum**mechanics and**quantum**electrodynamics. How general**relativity**and**quantum**mechanics can be unified is one of the unsolved problems in**physics**;**quantum**gravity and a "**theory**of everything ", which require a unification including general**relativity**too, are ...In theoretical

**physics**,**quantum nonlocality**refers to the phenomenon by which the measurement statistics of a multipartite**quantum**system do not admit an interpretation in terms of a local realistic**theory**.**Quantum nonlocality**has been experimentally verified under different physical assumptions.Special

**relativity**is a**theory**of the structure of spacetime. It was introduced in**Einstein's**1905 paper "On the Electrodynamics of Moving Bodies" (for the contributions of many other physicists and mathematicians, see History of special**relativity**). Special**relativity**is based on two postulates which are contradictory in classical mechanics:The gravitational force is attributed to the curvature of spacetime, described by

**Einstein's**general**theory****of relativity**. The other three are discrete**quantum**fields, and their interactions are mediated by elementary particles described by the Standard Model of particle**physics**.The idea of

**quantum**field**theory**began in the late 1920s with British physicist Paul Dirac, when he attempted to quantize the energy of the electromagnetic field; just like in**quantum**mechanics the energy of an electron in the hydrogen atom was quantized. Quantization is a procedure for constructing a**quantum****theory**starting from a classical ...The latest

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